نتایج جستجو برای: Chain reaction
تعداد نتایج: 627571 فیلتر نتایج به سال:
results our study showed that the sensitivity and specificity of taqman real time pcr was 96% and 95% respectively. these values were 89% and 90, 38% and 100%, 6% and 100% for pcr, culture and microscopy, respectively. conclusions our study showed that sensitivity of taqman real time pcr was higher that pcr, culture and microscopy but specificity of culture and microscopy was more than pcr and ...
dear editor-in-chief we read with interest the study by khazaei et al. (1) in which the authors have nicely concluded that pcr is more sensitive test than ziehl-neelsen staining and histo-pathological examination for the diagnosis of tuberculosis (tb). they have rightly pointed to use pcr, selectively, in acidfast bacilli negative paucibacillary forms of tb. however, we intend to highlight few ...
بیماری¬های ویروسی ناشی از نپوویروس¬ها از مخرب¬ترین بیماری¬های ویروسی مو در سراسر جهان به حساب می¬آیند که با نماتدهای خانواده longidoridae منتقل می¬شوند. اغلب این ویروس¬ها دارای میزبان¬های طبیعی متعددی در بین گیاهان زینتی و غیر زینتی، درختان میوه و علف¬های هرز می¬باشند. پیکره اعضای این جنس دو بخشی، جورقطر و به قطر حدود 30 نانومتر می¬باشد. غلظت این ویروس¬ها در گیاه و به ویژه تاک پایین است و در نت...
results 162 yeast species from 250 specimens were isolated in sabroud dextrose agar (sda) medium. 106 (65.4%) of them were germ tube formation positive, 86 (53%) chlamydoconidium formation positive and 101(62.4%) were pcr positive. yeast cells and mycelia were detected in the isolates on direct microscopic examination. c. albicans accounted for 66.04% of cases and 34% were non-c. albicans speci...
background neuroblastoma is the most common extracranial malignant solid tumor in children under 5 years, and it is characterized by wide clinical and biological heterogeneity. n-myc oncogene amplification is considered to be one of the most important prognostic factors used to evaluate survival in these patients. objectives the aim of our study was to determine amplification of the n-myc oncog...
آنزیم های dna ligase پایدار به حرارت به علت قابلیت های خود از اهمیت بالایی در زیست شناسی مولکولی برخوردارند. در این بین، آنزیم dna ligase از باکتری thermus thermophilus (tth dna ligase) با قابلیت های ویژه ی خود من جمله پایداری بالای حرارتی و دقت بالای عملکرد، می تواند کاربردهای وسیعی را در تکنیک های تشخیصی بیماری های ژنتیکی مانند تکنیک lcr (ligation chain reaction) و mlpa (multiple ligation-dep...
results all eight candida species were successfully detected, identified and quantitated based on the icl gene. a seven-log range of the gene copy number and a minimum detection limit of 103 copies were achieved. conclusions a one-tube absolute quantification real-time pcr that differentiates medically important candida species via individual unique melting temperature was achieved. analytical ...
results the results showed that nl1-gc/ls2 primer set could yield species-specific amplicons, which were well distinguished and allowed better species discrimination than that generated by the its3-gc/its4 primer set, in both dgge and ttge profiles. all five candida species were discriminated by dgge and ttge using the nl1-gc/ls2 primer set. conclusions comparison of dgge and ttge profiles obta...
background aseptic meningitis is the most common type of meningitis and is characterized by meningeal inflammation that is not linked to identifiable bacterial pathogens in cerebrospinal fluid (csf). objectives this study aimed to evaluate the frequency of aseptic meningitis caused by herpesviruses, namely herpes simplex types i and ii (hsv-1, hsv-2), epstein-barr virus (ebv), cytomegalovirus (...
conclusions in the present study, the highest prevalence was for st5, which is so important for epidemiology and risk of human infection. the report related to st3 in cattle as a subtype of human showed mutual infection between human and cattle. another important point in this study was the st6 report. finally, it seems that gathering epidemiological data is needed for a better understanding of...
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